After installing Edgy on my HP Compaq nc8430 laptop, the sound/audio no
longer works. It was working A-OK with Dapper. I followed the directions
in to install the
latest alsa drivers and such, but still no-go. I have also followed
advice provided in:

I did run alsamixer and have Master set to 100 and PCM set to 81. One
odd thing is that whenever I run RealPplayer, then quit it, then run
alsamixer, it shows PCM back to 0. Even though this does not happen with
XMMS, there is still no sound.

Here is the sound info for my laptop, in case it helps:

$ cat /proc/asound/cards
0 [Intel ]: HDA-Intel - HDA Intel
HDA Intel at 0xf4700000 irq 177

$ cat /proc/asound/devices
2: : timer
3: [ 0- 6]: digital audio playback
4: [ 0- 6]: digital audio capture
5: [ 0- 0]: digital audio playback
6: [ 0- 0]: digital audio capture
7: [ 0] : control

$ head -1 /proc/asound/card0/codec*
==> /proc/asound/card0/codec#0 <==
Codec: Analog Devices AD1981

==> /proc/asound/card0/codec#1 <==
Codec: Generic 11c1 Si3054

$ lspci -v |grep -A 5 Audio
00:1b.0 Audio device: Intel Corporation 82801G (ICH7 Family) High
Definition Audio Controller (rev 01)
Subsystem: Hewlett-Packard Company Unknown device 30a3
Flags: bus master, fast devsel, latency 0, IRQ 177
Memory at f4700000 (64-bit, non-prefetchable) [size=16K]

$ cat /etc/modprobe.d/alsa-base
# autoloader aliases
install sound-slot-0 /sbin/modprobe snd-card-0
install sound-slot-1 /sbin/modprobe snd-card-1
install sound-slot-2 /sbin/modprobe snd-card-2
install sound-slot-3 /sbin/modprobe snd-card-3
install sound-slot-4 /sbin/modprobe snd-card-4
install sound-slot-5 /sbin/modprobe snd-card-5
install sound-slot-6 /sbin/modprobe snd-card-6
install sound-slot-7 /sbin/modprobe snd-card-7

# Cause optional modules to be loaded above generic modules
install snd /sbin/modprobe --ignore-install snd $CMDLINE_OPTS && {
/sbin/modprobe -Qb snd-ioctl32 ; : ; }
install snd-pcm /sbin/modprobe --ignore-install snd-pcm $CMDLINE_OPTS &&
{ /sbin/modprobe -Qb snd-pcm-oss ; : ; }
install snd-mixer /sbin/modprobe --ignore-install snd-mixer
$CMDLINE_OPTS && { /sbin/modprobe --Qb snd-mixer-oss ; : ; }
install snd-seq /sbin/modprobe --ignore-install snd-seq $CMDLINE_OPTS &&
{ /sbin/modprobe -Qb snd-seq-midi ; /sbin/modprobe --quiet snd-seq-oss ;
: ; }

# Cause optional modules to be loaded above sound card driver modules
install snd-emu10k1 /sbin/modprobe --ignore-install snd-emu10k1
$CMDLINE_OPTS && { /sbin/modprobe -Qb snd-emu10k1-synth ; }
install snd-via82xx /sbin/modprobe --ignore-install snd-via82xx
$CMDLINE_OPTS && { /sbin/modprobe -Qb snd-seq ; }

# Load saa7134-alsa instead of saa7134 (which gets dragged in by it anyway)
install saa7134 /sbin/modprobe --ignore-install saa7134 $CMDLINE_OPTS &&
{ /sbin/modprobe -Qb saa7134-alsa ; : ; }
# Prevent abnormal drivers from grabbing index 0
options snd-bt87x index=-2
options snd-atiixp-modem index=-2
options snd-intel8x0m index=-2
options snd-via82xx-modem index=-2
options snd-usb-audio index=-2
options snd-usb-usx2y index=-2
# options snd-hda-intel model=3stack <--- I did try this but no luck
options snd-hda-intel model=AD1981

Note also that I use XUbuntu, not the Ubuntu w/ Gnome. However, I still
ran alsamixer and unmuted ALL channels, rebooted, and still no-go.

Note that:

~$ cat /proc/asound/version
Advanced Linux Sound Architecture Driver Version 1.0.14rc1.
Compiled on Jan 6 2007 for kernel 2.6.17-10-generic (SMP).